CN115257859B - Switch control circuit and device for remote control - Google Patents
Switch control circuit and device for remote control Download PDFInfo
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- CN115257859B CN115257859B CN202211018798.3A CN202211018798A CN115257859B CN 115257859 B CN115257859 B CN 115257859B CN 202211018798 A CN202211018798 A CN 202211018798A CN 115257859 B CN115257859 B CN 115257859B
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- 230000001276 controlling effect Effects 0.000 claims abstract description 9
- 238000012544 monitoring process Methods 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims abstract description 6
- 230000002441 reversible effect Effects 0.000 claims description 22
- 230000001012 protector Effects 0.000 claims description 21
- 230000005284 excitation Effects 0.000 claims description 10
- 238000010992 reflux Methods 0.000 claims description 8
- 230000005389 magnetism Effects 0.000 claims description 7
- 230000035939 shock Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 8
- 230000001808 coupling effect Effects 0.000 description 7
- 230000002411 adverse Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000000819 phase cycle Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
- B61L5/06—Electric devices for operating points or scotch-blocks, e.g. using electromotive driving means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
- B61L5/10—Locking mechanisms for points; Means for indicating the setting of points
- B61L5/107—Locking mechanisms for points; Means for indicating the setting of points electrical control of points position
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The embodiment of the application discloses a turnout switch control circuit and a turnout switch control device for remote control, wherein the turnout switch control circuit comprises an indoor circuit and an outdoor circuit; the indoor circuit is connected with the turnout switch machine through the outdoor circuit; the indoor circuit is positioned in the signal room and comprises a three-phase power supply, and the three-phase power supply is connected with the outdoor circuit through a cable to provide a working power supply for the turnout point machine; the outdoor circuit is positioned in the control box outside the signal chamber, is connected with the switch machine through a cable, and is used for controlling the switch machine and monitoring the position state of the switch correspondingly regulated by the switch machine.
Description
Technical Field
The application relates to the technical field of railway and rail traffic signals, in particular to a turnout switch control for remote control.
Background
A railroad switch is a trackside facility that branches one railway line (or track line, hereinafter the same) into two or more lines. In order to ensure transportation safety, all turnouts on the operation line are connected into a station signal building (room) through cables for centralized interlocking and control. In order to save cables and check the consistency of the action and the representation of the turnout, the starting circuit and the representation circuit of the existing turnout control circuit share an outdoor cable core wire. However, because the voltage drop problem exists in the electric circuit, the furthest distance of the cable single core of the alternating current switch machine is generally within 2.5km, when the length is exceeded, the voltage supply deficiency caused by the transmission voltage drop of the starting circuit is overcome, the voltage supply is realized by adopting a cable core adding method, the problem is that the distributed capacitance between the cable cores is increased, under the coupling effect of the distributed capacitance, the switch indicating circuit can generate larger induced voltage, and the result of wrong operation of the switch indicating circuit can occur in severe cases.
In the vicinity of some hub stations, because of the need of route untangling and speed increasing, turnouts are often arranged at the route positions (2.5-6 km are often arranged) far away from the stations, and the problem that the induction voltage of a turnout indication circuit is too high is difficult to thoroughly solve technically by a control circuit of the remote turnouts, and the problem can only be solved by engineering measures at present, such as arranging signal buildings near the remote turnouts, adopting a set of independent signal interlocking system equipment or adopting an area interlocking mode to control the remote turnouts; or the core wire connected with the representation circuit is separated from other core wires. However, the former increases the engineering investment of tens of millions of yuan, and also increases the equipment maintenance workload and cost in the operation period, while the latter only weakens the electromagnetic coupling effect between the core wire representing the circuit connection and other core wires, but cannot completely eliminate the electromagnetic coupling effect, and when the cable length is continuously lengthened, the consequences of wrong operation of the turnout representation circuit still occur.
Disclosure of Invention
Embodiments of the present application desire to provide a switch control circuit and apparatus for remote control.
The technical scheme of the application is realized as follows:
embodiments of the first aspect of the present application provide a switch control circuit for remote control, the circuit comprising an indoor circuit and an outdoor circuit; the indoor circuit is connected with the turnout switch machine through the outdoor circuit; the indoor circuit is positioned in the signal room and comprises a three-phase power supply, and the three-phase power supply is connected with the outdoor circuit through a cable to provide a working power supply for the turnout point machine; the outdoor circuit is positioned in the control box outside the signal chamber, is connected with the switch machine through a cable, and is used for controlling the switch machine and monitoring the position state of the switch correspondingly regulated by the switch machine.
Optionally, the outdoor circuit comprises a switch indication circuit; the turnout indicating circuit comprises a first positioning relay 1DBJ and a first reverse positioning relay 1FBJ, and when the first positioning relay 1DBJ is sucked up, the turnout point machine is in a positioning state; when the first inversion relay 1FBJ is sucked up, the switch machine is in an inversion state.
Optionally, the switch indication circuit further comprises a first start relay 1DQJF and a second start relay 2DQJF;
when the first starting reset relay 1DQJF is sucked up, the loop of the turnout indicating circuit is disconnected, the first positioning relay 1DBJ and the first reversing relay 1FBJ lose magnetism and fall, and the working power supply of the turnout switch machine is conducted; if the second starting reset relay 2DQJF is in a positioning state, the turnout point switch is connected with a forward working power supply to control the turnout to be switched to the positioning state; and if the second starting reset relay 2DQJF is in a reversed state, the turnout switch machine is connected with a reverse working power supply to control the turnout to be switched to the reversed state.
Optionally, when the first starting reset relay 1DQJF falls, the working power supply of the switch machine is disconnected, and the loop of the switch indicating circuit is conducted; if the second starting reset relay 2DQJF is in a positioning state, the exciting circuit of the first positioning relay 1DBJ is conducted; if the second start reset relay 2DQJF is in the reverse state, the excitation circuit of the first reverse relay 1FBJ is turned on.
Optionally, the indoor circuit further comprises a first power supply terminal and a first starting relay 1DQJ; the first power supply end is connected with the first starting relay 1DQJF through the first starting relay 1DQJ, and the first starting relay 1DQJF is used for resetting the working state of the first starting relay 1 DQJ.
Optionally, the indoor circuit further comprises a second start relay 2DQJ; the first power supply end is connected with the second starting relay 2DQJF through the second starting relay 2DQJ, and the second starting relay 2DQJF is used for resetting the working state of the second starting relay 2 DQJ.
Optionally, the outdoor circuit further comprises a second power supply end, and the indoor circuit further comprises a second positioning relay 2DBJ and a second flip relay 2FBJ; the turnout indicating circuit also comprises a positioning indicating contact and a reversed indicating contact;
the second power supply end is connected with a second positioning relay 2DBJ and a second flip relay 2FBJ in the indoor circuit through the positioning representation contact and the flip representation contact; the second positioning relay 2DBJ and the second inverting relay 2FBJ are respectively used for resetting the working states of the first positioning relay 1DBJ and the first inverting relay 1 FBJ.
Optionally, the indoor circuit further comprises a phase failure protector DBQ-S and a protection relay BHJ, wherein the phase failure protector DBQ-S is used for monitoring whether a power signal of the three-phase power supply is out of phase, and when the power signal is out of phase, an excitation loop of the protection relay BHJ is cut off, after the protection relay BHJ loses magnetism and falls, the excitation loop of the first starting relay 1DQJ is cut off, and the working power supply of the turnout switch machine is cut off through a contact point of the first starting relay 1 DQJF.
Optionally, the outdoor circuit further comprises a switch indication transformer BB, a current limiting resistor and at least one overcurrent protector;
the representation transformer BB is used for providing alternating current power supply for the turnout representation circuit;
the current limiting resistor is used for limiting the reflux current value of the turnout representation circuit;
the overcurrent protector is used for being disconnected when the reflux current value of the turnout indicating circuit is too large, so as to protect the turnout indicating circuit.
Embodiments of the second aspect of the present application provide a switch control device for remote control, comprising: at least one set of switch control circuit and shock-absorbing rack of the first aspect, wherein the first positioning relay 1DBJ, the first reversing relay 1FBJ, the first starting relay 1DQJF, the second starting relay 2DQJF, the switch indicating transformer BB, the current limiting resistor and the overcurrent protector are located on at least one shock-absorbing rack, which is fixed in a control box; and at least one set of outdoor circuit in the control box is used for controlling a traction point switch machine of at least one set of switches.
The embodiment of the application provides a turnout switch control circuit and a turnout switch control device for remote control, wherein the turnout switch control circuit comprises an indoor circuit and an outdoor circuit; the indoor circuit is connected with the turnout switch machine through the outdoor circuit; the indoor circuit is positioned in the signal room and comprises a three-phase power supply, and the three-phase power supply is connected with the outdoor circuit through a cable to provide a working power supply for the turnout point machine; the outdoor circuit is positioned in the control box outside the signal chamber, is connected with the switch machine through a cable, and is used for controlling the switch machine and monitoring the position state of the switch correspondingly regulated by the switch machine. By adopting the technical scheme, the part of the circuit of the turnout control circuit far away from the switch machine is moved into the control box beside the switch machine, so that the cable length of the turnout representation circuit is shortened, the adverse effect caused by the distributed capacitive coupling effect between cable core wires of the turnout representation circuit is eliminated, the correctness and accuracy of the turnout starting circuit and the turnout representation circuit are ensured, the condition of the cable core adding of the turnout representation circuit can be reduced, and the engineering construction cost and the operation maintenance cost are reduced.
Drawings
Fig. 1 is a schematic diagram of a switch control circuit for remote control according to an embodiment of the present application;
fig. 2 is a schematic diagram of a switch control circuit for remote control according to the second embodiment of the present application;
fig. 3 is a schematic diagram of connection between an indoor circuit and an outdoor circuit according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a switch control device for remote control according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Furthermore, the drawings are only schematic illustrations of the present application and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software or in one or more hardware modules or integrated circuits or in different networks and/or processor devices and/or microcontroller devices.
The flow diagrams depicted in the figures are exemplary only and not necessarily all steps are included. For example, some steps may be decomposed, and some steps may be combined or partially combined, so that the order of actual execution may be changed according to actual situations.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes any and all combinations of the associated listed items.
In general, the furthest distance of a cable single core of an ac switch machine is generally within 2.5km, when the length exceeds the length, in order to overcome the voltage supply deficiency caused by the transmission voltage drop of a starting circuit, a cable core-adding method is often adopted to realize the cable single core, so that the problem is that the distributed capacitance between cable cores is increased, and under the coupling effect of the distributed capacitance, a switch indicating circuit can generate larger induced voltage, and the result of wrong operation of the switch indicating circuit can occur in serious cases. Therefore, it is necessary to ensure the correctness and accuracy of the switch starting circuit and the indicating circuit.
In some embodiments, the switch control circuit is located in the signal room, and the start circuit and the indication circuit of the switch control circuit both share an outdoor cable core, and are remotely connected to the switch machine through the shared cable core. For example, a relay type five-wire system (X1 line to X5 line).
However, when the length of the switch control cable between the signal room and the switch machine exceeds a certain distance, in order to ensure reliable switching of the switch machine, the core wires X1 to X5 between the starting circuit and the switch machine need to be cored to reduce the cable voltage drop, and the cable can generate a coupling phenomenon between the core wires X1, X2, X3, X4 and X5 and the distributed capacitance to the ground while transmitting power, thereby affecting the normal operation of the switch indication circuit. Based on this, the following examples are provided.
In some embodiments, referring to fig. 1, fig. 1 is a schematic diagram of a switch control circuit for remote control according to an embodiment of the present application, where the switch control circuit 100 includes: an indoor circuit 110 and an outdoor circuit 120; the indoor circuit 110 is connected with the switch machine 130 through the outdoor circuit 120;
the indoor circuit 110 is positioned in the signal room and comprises a three-phase power supply, and the three-phase power supply is connected with the outdoor circuit 120 through a cable to provide working power for the switch machine 130;
the outdoor circuit 120 is located in the control box outside the signal room, and is connected with the switch machine 130 through a cable, and is used for controlling the switch machine 130 and monitoring the position state of the switch correspondingly regulated by the switch machine 130.
The turnout control circuit provided by the embodiment is applied to a turnout machine. The switch machine is a signal basic device used for reliably converting the switch position, changing the switch opening direction, locking the switch tongue and reflecting the switch position, and can provide working power for the switch machine through a three-phase power supply. The three-phase power supply is composed of three alternating current potentials with the same frequency, equal amplitude and 120 degrees of mutual difference in phase sequence.
In this embodiment, the control circuit is divided into two, an indoor circuit and an outdoor circuit; the indoor circuit is positioned in the signal room and is connected with the switch machine through a cable to provide a working power supply for the switch machine, and the influence of distance factors is avoided. The outdoor circuit is positioned in a control box near the switch machine, transmits control instructions for the switch machine, controls various working modes of the switch machine, and monitors the position state of the switch correspondingly regulated by the switch machine. When the distance between the turnout switch machine and the signal room is far, the outdoor circuit can be far away from the signal room and close to the turnout switch machine, namely the turnout switch machine is controlled in a short distance, and the turnout switch machine is not influenced by distance factors. In this embodiment, the outdoor circuit is disposed in the control box close to the switch machine, and when the length of the switch control cable between the signal room and the switch machine is extended, the signal transmission distance between the outdoor circuit in the control box and the switch machine is not extended, so that the correctness and accuracy of the switch starting circuit and the indication circuit on the control box and the switch machine frame are ensured.
According to the embodiment, the part of the turnout control circuit far away from the switch machine is moved into the control box beside the switch machine, so that the cable length of the turnout indication circuit is shortened, the adverse effect caused by the distributed capacitive coupling effect among cable cores of the turnout indication circuit is eliminated, the correctness and the accuracy of the turnout starting circuit and the indication circuit are ensured, the situation of cable core adding of the turnout indication circuit can be reduced, and the construction cost is reduced.
In some embodiments, referring to fig. 2, fig. 2 is a schematic diagram of a switch control circuit according to an embodiment of the present application; the indoor phase failure protector DBQ-S and the protection relays BHJ, A, B and C are three input interfaces corresponding to the three-phase power supply. The phase failure protector DBQ-S can make the protection relay BHJ lose magnetism and fall down through outputting corresponding instructions, so that the working power supply of the turnout point machine is controlled. RD1, RD2, RD3 and RD5 are fuses or circuit breakers, and are fused when the current in the circuit is abnormal, so that the safety of each device in the circuit is ensured.
The outdoor circuit comprises a first positioning relay 1DBJ, a first reverse relay 1FBJ, a first starting relay 1DQJF and a second starting relay 2DQJF; the relays are matched with each other to control various working modes of the turnout point machine. R1 is a current limiting resistor for limiting the value of the return current of the switch indication circuit.
In some embodiments, referring to fig. 3, fig. 3 is a schematic diagram illustrating a connection relationship between an indoor circuit and an outdoor circuit according to an embodiment of the present application; the outdoor circuit comprises a turnout indicating circuit; the turnout indicating circuit comprises a first positioning relay 1DBJ and a first reverse positioning relay 1FBJ, and when the first positioning relay 1DBJ is sucked up, the turnout point machine is in a positioning state; when the first reverse relay 1FBJ is sucked up, the switch machine is in a reverse state.
In this embodiment, X4-X13 is an external cable for connecting an indoor circuit and an outdoor circuit, where the switch indicating circuit includes a set of first positioning relay 1DBJ and first inverting relay 1FBJ adjacent to the forward input BZ, and another set of first positioning relay 1DBJ and first inverting relay 1FBJ adjacent to the inverting input BF, and the two sets of first positioning relay 1DBJ and first inverting relay 1FBJ are connected in series. It should be noted that the forward signal terminal BZ and the reverse signal terminal BF are adjustable, i.e. the transmission direction of the control signal in the loop may be different.
In some embodiments, referring again to FIG. 3, the switch indication circuit further includes a first start relay 1DQJF and a second start relay 2DQJF;
when the first starting reset relay 1DQJF is sucked up, the loop of the turnout indicating circuit is disconnected, the first positioning relay 1DBJ and the first reversing relay 1FBJ lose magnetism and fall, and the working power supply of the turnout switch machine is conducted; if the second starting reset relay 2DQJF is in a positioning state, the turnout point switch is connected with a forward working power supply to control the turnout to be switched to the positioning state; if the second starting reset relay 2DQJF is in the reversed state, the turnout switch machine is connected with a reverse working power supply to control the turnout to be switched to the reversed state.
Here, the first starting reset relay 1DQJF and the second starting reset relay 2DQJF are located in different loops, when the first starting reset relay 1DQJF is attracted, the working power supply of the switch machine is turned on, that is, the switch machine can work normally, at this time, the working state of the switch can be switched and controlled by adjusting the working state of the second starting reset relay 2 DQJF.
In some embodiments, when the first start relay 1DQJF falls, the working power supply of the turnout switch machine is disconnected, and the loop of the turnout indicating circuit is conducted; if the second starting reset relay 2DQJF is in a positioning state, the exciting circuit of the first positioning relay 1DBJ is conducted; if the second start reset relay 2DQJF is in the inverted state, the excitation circuit of the first inverted relay 1FBJ is turned on.
Similar to the above embodiment, the first start-up reset relay 1DQJF and the second start-up reset relay 2DQJF are located in different branches, and when the first start-up reset relay 1DQJF falls, the operating power supply of the switch machine is disconnected, i.e. the switch machine stops working, at this time, the operating state of the first positioning relay 1DBJ or the first reversing relay 1FBJ can be controlled by adjusting the operating state of the second start-up reset relay 2 DQJF.
In some embodiments, the indoor circuit further comprises a first power supply terminal and a first start relay 1DQJ; the first power supply terminal is connected with the first starting relay 1DQJF through the first starting relay 1DQJ, and the first starting relay 1DQJF is used for resetting the working state of the first starting relay 1 DQJ.
In this embodiment, the first power supply terminal is located at the indoor circuit side, and the first power supply terminal may include a forward signal terminal BZ and a reverse signal terminal BF of the control signal, where the first starting relay 1DQJF is located between the two first starting relays 1DQJ, and the two first starting relays 1DQJ are connected to the forward signal terminal BZ and the reverse signal terminal BF, respectively. In some embodiments, the indoor circuit further comprises a second start relay 2DQJ; the first power supply terminal is connected with the second starting relay 2DQJF through the second starting relay 2DQJ, and the second starting relay 2DQJF is used for resetting the working state of the second starting relay 2 DQJ.
In this embodiment, the second starting relay 2DQJF is located between two second starting relays 2DQJ, and the two second starting relays 2DQJ are connected to the forward signal terminal BZ and the reverse signal terminal BF, respectively. The control principle is the same as that of the first starting relay 1DQJF in the previous embodiment, in some embodiments, the outdoor circuit further includes a second power supply terminal, and the indoor circuit further includes a second positioning relay 2DBJ and a second inverting relay 2FBJ; the turnout indicating circuit also comprises a positioning indicating contact and a reversed indicating contact;
the second power supply end is connected with a second positioning relay 2DBJ and a second flip-bit relay 2FBJ in the indoor circuit through a positioning representation contact and a flip-bit representation contact; the second positioning relay 2DBJ and the second inverting relay 2FBJ are used for reproducing the operating states of the first positioning relay 1DBJ and the first inverting relay 1FBJ, respectively.
In this embodiment, the second power supply terminal is located on the outdoor circuit side, and the second power supply terminal may include a forward signal terminal BZ and a reverse signal terminal BF of the control signal, between which a set of the first positioning relay 1DBJ and the first reverse relay 1FBJ adjacent to the forward input terminal BZ and another set of the first positioning relay 1DBJ and the first reverse relay 1FBJ adjacent to the reverse input terminal BF are included, and the two sets of the first positioning relay 1DBJ and the first reverse relay 1FBJ are connected in series. The working states of the first positioning relay 1DBJ and the first reversing relay 1FBJ can be respectively shown by the second positioning relay 2DBJ and the second reversing relay 2FBJ, so that when the first positioning relay 1DBJ is sucked up, the working state of the second positioning relay 2DBJ is also sucked up, the switch machine is in a positioning state, and when the first reversing relay 1FBJ is sucked up, the working state of the second reversing relay 2FBJ is also sucked up, and the switch machine is in a reversing state.
In some embodiments, the indoor circuit further comprises a phase failure protector DBQ-S and a protection relay BHJ, wherein the phase failure protector DBQ-S is used for monitoring whether a power signal of the three-phase power supply is out of phase, and when the power signal is out of phase, an excitation loop of the protection relay BHJ is cut off, the excitation loop of the first starting relay 1DQJ is cut off after the protection relay BHJ loses magnetism, and the working power supply of the turnout switch machine is cut off through a contact point of the first starting reset relay 1 DQJF.
The open-phase protector DBQ-S is a protection device that prevents the application of power to a protected device by disconnecting the protected device by means of the disappearance of current in one phase conductor of a multi-phase circuit or by means of the loss of voltage of one or more phases of a multi-phase system. When the main circuit of the turnout point switch is in abnormal working states such as open-phase, overload and three-phase imbalance, the open-phase protector DBQ-S can timely break contacts of a switching device, disconnect the three-phase power supply of the turnout point switch, and rapidly and reliably protect the turnout point switch. In this embodiment, when a phase of one of the three-phase power supplies is out of phase, the phase is free of current, and the current of the other two phases is higher than the rated current, at this time, the phase-loss protector DBQ-S cuts off the excitation circuit of the protection relay BHJ, and further cuts off the working power supply of the switch machine, thereby achieving phase-loss protection.
In some embodiments, the outdoor circuit further comprises a switch indication transformer BB, a current limiting resistor, and at least one overcurrent protector;
representation transformer BB is used for providing alternating current power supply for the turnout representation circuit;
the current limiting resistor is used for limiting the reflux current value of the turnout indicating circuit;
and the overcurrent protector is used for opening when the reflux current value of the turnout indicating circuit is too large, and protecting the turnout indicating circuit.
In this embodiment, transformers BB (BD 1-7) are used to perform voltage conversion, and can convert the input power signals into suitable AC power to provide working voltages for the switch indication circuit. The current limiting resistor R1 is used for limiting the reflux current value of the turnout indicating circuit; and the overcurrent protector is used for being disconnected when the reflux current value of the turnout indicating circuit is overlarge, protecting the turnout indicating circuit and preventing various devices in the circuit from being damaged.
In some embodiments, the cable between the three-phase power supply and the control circuit is a three-core cable or a five-core cable.
In this embodiment, the outdoor circuit is located in the control box beside the switch machine, and is relatively close, so that the core-adding process is basically not required, and even when the length of the cable controlled by the switch exceeds a certain distance, the core-adding process can be performed according to the conventional method, and the normal operation of the switch indication circuit is not affected. The cable may be not limited to a three-core cable and a five-core cable, but may be an eight-core cable or a ten-core cable, which is not limited thereto.
According to the switch machine, the part of the circuit of the switch control circuit far away from the switch machine is moved into the control box beside the switch machine, so that the cable length of the switch indicating circuit is shortened, the adverse effect caused by the distributed capacitive coupling effect among cable cores of the switch indicating circuit is eliminated, the correctness and accuracy of the switch starting circuit and the indicating circuit are ensured, the situation that the switch indicating circuit cable is cored can be reduced, and the construction cost is reduced.
In some embodiments, referring to fig. 4, fig. 4 is a schematic structural diagram of a switch control device for remote control according to an embodiment of the present application; the embodiment of the application provides a switch controlling means for remote control, includes: the switch control circuit and the shock-absorbing frame in the above embodiment, wherein the first positioning relay 1DBJ, the first inverting relay 1FBJ, the first starting reset relay 1DQJF, the second starting reset relay 2DQJF, the switch indication transformer BB, the current limiting resistor and the overcurrent protector are located on at least one shock-absorbing frame, the shock-absorbing frame is fixed in the control box 140, and at least one set of outdoor circuits in the control box is used for controlling the switch machine of at least one switch traction point. The switch control circuit can control the switch machine to work according to the power signal so as to realize switch conversion. Here, the shock mount serves to alleviate the impact from the rail surface, ensuring the normal operation of each relay.
It should be noted here that: the description of the switch control embodiments above is similar to that of the switch control circuit embodiments described above, with similar benefits as the circuit embodiments. For technical details not disclosed in the embodiments of the switch control device of the present application, please refer to the description of the embodiments of the switch control circuit of the present application, and the details are not described herein.
In several embodiments provided herein, it should be understood that the disclosed circuits and devices may be implemented in other ways. The circuit and device embodiments described above are merely illustrative.
The embodiments described in the embodiments of the present application are merely examples, but are not limited thereto, and the embodiments described herein are only concerned with the switch control circuit and the device.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application. The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about or replace the present application within the technical scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (8)
1. A switch control circuit for remote control, the circuit comprising an indoor circuit and an outdoor circuit; the indoor circuit is connected with the turnout switch machine through the outdoor circuit;
the indoor circuit is positioned in the signal room and comprises a three-phase power supply, and the three-phase power supply is connected with the outdoor circuit through a cable to provide a working power supply for the turnout point machine; the outdoor circuit comprises a turnout indicating circuit; the turnout indicating circuit comprises a first positioning relay 1DBJ and a first reverse positioning relay 1FBJ, and when the first positioning relay 1DBJ is sucked up, the turnout point machine is in a positioning state; when the first inversion relay 1FBJ is sucked up, the turnout point machine is in an inversion state; the turnout representation circuit further comprises a first starting relay 1DQJF and a second starting relay 2DQJF; when the first starting reset relay 1DQJF is sucked up, the loop of the turnout indicating circuit is disconnected, the first positioning relay 1DBJ and the first reversing relay 1FBJ lose magnetism and fall, and the working power supply of the turnout switch machine is conducted; if the second starting reset relay 2DQJF is in a positioning state, the turnout point switch is connected with a forward working power supply to control the turnout to be switched to the positioning state; if the second starting reset relay 2DQJF is in a reversed state, the turnout point switch is connected with a reverse working power supply to control the turnout to be switched to the reversed state;
the outdoor circuit is positioned in the control box outside the signal chamber, is connected with the switch machine through a cable, and is used for controlling the switch machine and monitoring the position state of the switch correspondingly regulated by the switch machine.
2. The switch control circuit of claim 1, wherein when said first start reset relay 1DQJF falls, the operating power supply of said switch machine is turned off and the circuit of said switch indication circuit is turned on; if the second starting reset relay 2DQJF is in a positioning state, the exciting circuit of the first positioning relay 1DBJ is conducted; if the second start reset relay 2DQJF is in the reverse state, the excitation circuit of the first reverse relay 1FBJ is turned on.
3. The switch control circuit of claim 2, wherein the indoor circuit further comprises a first power terminal and a first start relay 1DQJ; the first power supply end is connected with the first starting relay 1DQJF through the first starting relay 1DQJ, and the first starting relay 1DQJF is used for resetting the working state of the first starting relay 1 DQJ.
4. The switch control circuit of claim 3, wherein said indoor circuit further comprises a second start relay 2DQJ; the first power supply end is connected with the second starting relay 2DQJF through the second starting relay 2DQJ, and the second starting relay 2DQJF is used for resetting the working state of the second starting relay 2 DQJ.
5. The switch control circuit of claim 3, wherein the outdoor circuit further comprises a second power terminal, and the indoor circuit further comprises a second positioning relay 2DBJ and a second inverting relay 2FBJ; the turnout indicating circuit also comprises a positioning indicating contact and a reversed indicating contact;
the second power supply end is connected with a second positioning relay 2DBJ and a second flip relay 2FBJ in the indoor circuit through the positioning representation contact and the flip representation contact; the second positioning relay 2DBJ and the second inverting relay 2FBJ are respectively used for resetting the working states of the first positioning relay 1DBJ and the first inverting relay 1 FBJ.
6. The switch control circuit according to claim 3, wherein the indoor circuit further comprises a phase failure protector DBQ-S and a protection relay BHJ, the phase failure protector DBQ-S is used for monitoring whether a power signal of the three-phase power supply is out of phase, and cutting off an excitation circuit of the protection relay BHJ when the power signal is out of phase, cutting off the excitation circuit of the first starting relay 1DQJ after the protection relay BHJ loses magnetism, and cutting off an operating power supply of the switch machine through a contact of the first starting reset relay 1 DQJF.
7. The switch control circuit of claim 3, wherein the outdoor circuit further comprises a switch indication transformer BB, a current limiting resistor, and at least one overcurrent protector;
the representation transformer BB is used for providing alternating current power supply for the turnout representation circuit;
the current limiting resistor is used for limiting the reflux current value of the turnout representation circuit;
the overcurrent protector is used for being disconnected when the reflux current value of the turnout indicating circuit is too large, so as to protect the turnout indicating circuit.
8. A switch control device for remote control, comprising: the switch control circuit and shock mount of at least one set of claim 7, wherein the first positioning relay 1DBJ, the first reversing relay 1FBJ, the first start relay 1DQJF, the second start relay 2DQJF, the switch indication transformer BB, the current limiting resistor and the overcurrent protector are located on at least one shock mount, the shock mount being fixed within a control box; and at least one set of outdoor circuit in the control box is used for controlling a traction point switch machine of at least one set of switches.
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| CN202211018798.3A CN115257859B (en) | 2022-08-24 | 2022-08-24 | Switch control circuit and device for remote control |
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| CN202211018798.3A CN115257859B (en) | 2022-08-24 | 2022-08-24 | Switch control circuit and device for remote control |
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| CN115257859B true CN115257859B (en) | 2024-03-15 |
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